# Zhu Su

Zhu Su (8 October 1361 – 2 September 1425) was a medical scientist, botanist, author of Jiuhuang Bencao, and a prince of the Ming dynasty. He was the fifth son of the Hongwu Emperor and Empress Ma. In 1370, he was made the Prince of Wu, and in 1378, his title was changed to Prince of Zhou. He was assigned to Kaifeng in 1381.

## Biography

Zhu Su was born on 8 October 1361, the fifth son of Zhu Yuanzhang and his first wife, Lady Ma, according to official records. At the time, Zhu Yuanzhang was based in Nanjing and was a prominent leader in the Red Turban Rebellion. In 1368, he became the emperor of the Ming dynasty and quickly unified China under his rule. In May 1370, he granted the titles of princes (王) to seven of his sons, including Zhu Su who became the Prince of Wu (吳王). In 1374, the emperor refused to allow Zhu Su to settle in Hangzhou, arguing that the revenue from Wu (Jiangnan) was crucial to the central government and should be under its direct control.
Zhu Su developed a close relationship with his fifteen-month-older brother, Zhu Di, despite their contrasting personalities. In 1376, he relocated to Fengyang in central China, where he engaged in military training with other princes. Two years later, his father bestowed upon him the title of Prince of Zhou (周王) and arranged for him to marry the daughter of General Feng Sheng, the military commander in Kaifeng, the capital of Henan. Upon reaching adulthood in 1381, Zhu Su moved to Kaifeng, where he held no official authority over the local administration, but his personal guard and large household, led by experienced advisors and officials, granted him significant influence. Alongside his father-in-law, Zhu Su oversaw the troops stationed in the province.
In 1389, Zhu Su secretly left Kaifeng for Fengyang to visit Feng Sheng, who had been condemned by the emperor for his actions during a victorious battle against the Mongols in 1387. As a result, Zhu Su was banished to Yunnan in the southwest of the empire, but was actually held captive at the imperial court in Nanjing. His eldest son, Zhu Youdun, took over his household in Kaifeng and was officially named as Zhu Su's successor in 1391. Zhu Su was not permitted to return to Kaifeng until the end of 1391.
After the Jianwen Emperor took the throne, the new government implemented a policy of "reducing the feudatories". This resulted in Zhu Su being the first victim of this new policy. In the autumn of 1398, his second son Zhu Youxun accused him of planning a rebellion, leading to Zhu Su being imprisoned, stripped of his titles, and sent into exile in Yunnan. After the Jianwen Emperor's defeat in the civil war and Zhu Di's rise to power as the Yongle Emperor, Zhu Su was able to return to Nanjing in 1402 and then to Kaifeng in 1403, resuming his previous position.
Although the Yongle Emperor provided him with double the usual princely stipend, transferred the revenues from trade taxes in Kaifeng to him, and bestowed high gifts, he was kept away from politics. As a result, Zhu Su turned his attention to science. He devoted himself to the study of botany and medicine, and in 1406, he published a botanical monograph titled Jiuhuang Bencao ("Famine Relief Herbal"), which described 414 edible wild plants. Most of these plants (276) were not mentioned in older herbals that focused solely on medicinal plants. The purpose of this book was to educate readers about edible plants that could be used in the event of crop failure and famine. In addition to this, he also published Puji fang ("Prescriptions for Common Benefit"), a collection of 61,739 medical prescriptions. Not only was he a talented writer, but he was also a skilled calligrapher.
In 1420, Zhu Su was summoned to Nanjing on charges of plotting a rebellion. He confessed to his crimes and was pardoned by the emperor, but his personal guard was reduced to a minimum.
Zhu Su died on 2 September 1425. His eldest son, Zhu Youdun, was a prolific playwright who wrote over thirty plays in the zaju genre. He succeeded his father as the new Prince of Zhou. Zhu Su had a total of sixteen sons and ninthteen daughters. His descendants held the title of Prince of Zhou until the mid-17th century.

## Family
### Consorts and issue

* Princess consort of Zhou, of the Feng clan (周王妃 馮氏; d. 1422), daughter of Feng Sheng, Duke of Song (宋國公 馮勝)
** Zhu Youndun, Prince Xian of Zhou (周憲王 朱有燉; 6 February 1379 – 1439), first son
** Zhou Youxun, Prince of Runan (汝南王 朱有爋; b. 11 May 1380 ), second son
* Secondary consort of Zhou, of the Ni clan (周王次妃 倪氏; 1360 – 1420), personal name Miaoding (妙定), daughter of Ni An (倪安)
** Princess Nanyang (南陽郡主), fourth daughter
*** Married Zhang Yi (張儀) in 1404
* Secondary consort of Zhou, of the Mu clan (周王次妃 穆氏; 1368–1425), dharma name Miaofu (妙福)
* Secondary consort of Zhou, of the Yang clan (周王次妃 楊氏; 1387–1425), dharma name Miaoxiu (妙秀)
* Secondary consort of Zhou, of the Li clan (周王次妃 李氏; 1392–1444)
** Zhu Yougang, Prince Gongzhuang of Neixiang (內鄉恭莊王 朱有焵; 1410–1464), 13th son
** Zhu Youqiao, Prince Zhuangjian of Zuocheng (胙城莊簡王 朱有燆; 21 August 1411 – 9 September 1453), 14th son
* Furen, of the Hu clan (夫人 胡氏; d. 1435)
** Zhu Youjue, Prince Jian of Zhou (周簡王 朱有爝; 1392–1452), fourth son
** Zhou Youfu, Prince Kangjian of Yiyang (宜陽康簡王 朱有炥; d. 1470), ninth son
** Zhu Youyun, Prince Kangyi of Fengqiu (封丘康懿王 朱有熅; 1407–1467), 11th son
* Lady, of the Chen clan (陳氏)
** Zhu Youguang, Prince Jingxi of Yongning (永寧靖僖王 朱有灮; 15 September 1393 – 1466), sixth son
** Zhu Youshan, Prince Gongxi of Ruyang (汝陽恭僖王 朱有煽;16 November 1396 – 1444), seventh son
* Lady, of the Zhou clan (周氏)
** Zhu Youkuang, Prince Gongding of Zhenping (鎮平恭定王 朱有爌; 1400–1471), eighth son
* Lady, of the Wang clan (王氏)
** Zhou Youjiong, Prince Daogong of Suiping (遂平悼恭王 朱有熲; 1405–1438), tenth son
* Unknown
** Zhou Youxuan, Prince Huaizhuang of Shunyang (順陽懷莊王 朱有烜; d. 1415), third son
** Zhou Youxi (朱有熹; 11 January 1393 – 1428), fifth son
** Zhu Youyi, Prince Daogong of Luoshan (羅山悼恭王 朱有熼; 1409–1420), 12th son
** Fifteenth son
** Prince of Gushi, 16th son
** Princess Yifeng (儀封郡主), first daughter
*** Married Pu Zichun (溥子春) in 1402
** Princess Lanyang (蘭陽郡主), second daughter
*** Married Xu Maoxian (徐茂先) in 1402
** Princess Xinyang (信陽郡主), third daughter
*** Married Sheng Yu (盛瑜) in 1404
** Princess Yongcheng (永城郡主), fifth daughter
*** Married Cheng He (程和) in 1405
** Princess Xingyang (滎陽郡主), sixth daughter
*** Married Zhang Yi (張義) in 1406
** Princess Xinxiang (新鄉郡主), eighth daughter
*** Married Zhang Lin (張琳) in 1406
** Princess Ningling (寧陵郡主), ninth daughter
*** Married Qian Qin (錢欽) in 1411
** Princess Yian (宜安郡主), tenth daughter
*** Married Cai Yi (蔡義) in 1413
** Princess Chenliu (陳留郡主), 11th daughter
*** Married Feng Xun (馮訓) in 1411
** Princess Shangshui (商水郡主), 17th daughter
*** Married Tian Jun (田俊) in 1431
** Princess Zhongmou (中牟郡主), 18th daughter
*** Married Zhuan Zhong (莊忠) in 1431
** Nineteenth daughter (1423–1433)